American GCGH-50 2**

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. It delivers 76 gallons of hot water in the test's first hour. Its tank holds 48 gallons, so reheating adds 28 gallons during the first hour. Of 763 gas storage models, 429 give more hot water in the first hour. The median gas storage model gives 78 gallons in its first hour.

It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 63% of the energy it uses ends up as hot water (UEF 0.63). Its test simulated a day of high hot water use (its draw pattern). Of 434 gas storage models with the same draw pattern, 339 have a higher UEF. On its draw pattern, the median gas storage UEF is 0.66. When it reheats water in the test, 77% of the energy it uses ends up in the water.

Its 2 model numbers are G61-50-T38 2*1 and G61-50T38 2**. All of its test figures are shared by 7 other basic models. Between them, those basic models carry 4 other brand names. You can find the whole group on the page for the A. O. Smith G6N-UT5040NVR 5**.